[Lucas00]

All of the accounts are years old. I'm assuming just spam accounts that slipped through the cracks. How they can post, I'm not sure. So that leads me to think they're likely hacked accounts. Being a Tapatalk user I can tell you these last few spammer/scammers have not used tapatalk to post. (No Tapatalk symbol by names)

The weirdest part is how the spam isn't coherent at all. The only thing that makes sense is its a phishing tactic. Maybe a session hijacker which are extremely dangerous, They can hack bank/other accounts just by clicking a link.

I think it would be worth hiring a cyber security expert or somebody who is very well versed on forum backend and can make some kind of security changes?